ASTROSAT CZTI

Data Quality Report

Orbit 13071

Creation date: 2024-06-27T16:36:11.873956
Switch to: Orbit-wise | Merged OBSID-wise
web.py, SVN revision $Rev$

Source files: Data quality report (detailed, human readable) | Data quality report (concise, machine readable)

Observation information


Basic statistics of files

Param Original file Final file
FilenamemodeM0/AS1A04_176T02_9000001924_13071cztM0_level2.evt modeM0/AS1A04_176T02_9000001924_13071cztM0_level2_quad_clean.evt
Size (bytes)1,248,131,520120,245,760
Size1.2 GB 114.7 MB
Events in quadrant A5,452,328797,630
Events in quadrant B12,450,040701,768
Events in quadrant C4,973,455808,161
Events in quadrant D14,209,417598,326

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0250
B0250
C0250
D0250

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0225996
B0439822
C0218292
D0491116

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02160
B02160
C02160
D02160

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A10597900.849297%
B10599349232.946504%
C10599350.330220%
D10597354433.443427%

Noise dominated fraction

Noise dominated data is calculated using 1-second bins in cleaned event files. If a bin has >2000 counts, and if more than 50% of those come from <1% of pixels, then it is considered to be noise-dominated and hence unusable.

Quadrant # 1 sec bins Bins with >0 counts Bins with >2000 counts High rate bins dominated by noise Noise dominated (total time) Noise dominated (detector-on time) Marked lightcurve
A 13160 10601 12 12 0.09% 0.11%
B 13160 10601 2719 2719 20.66% 25.65%
C 13160 10602 1 1 0.01% 0.01%
D 13160 10600 3494 3494 26.55% 32.96%

Top noisy pixels

Top three noisy pixels from each quadrant. If the there are fewer than three noisy pixels in the level2.evt file, extra rows are filled as -1

Pixel properties Quadrant properties
Quadrant DetID PixID Counts Sigma Mean Median Sigma
A 12 189 197181 748.09 1311 1286 261.9
A 15 223 67101 251.34 1311 1286 261.9
A 1 162 39841 147.23 1311 1286 261.9
B 4 239 5919372 29921.63 1056 1029 197.8
B 0 85 2210901 11172.55 1056 1029 197.8
B 0 219 139142 698.26 1056 1029 197.8
C 15 208 19958 64.52 1264 1270 289.6
C 14 234 17305 55.36 1264 1270 289.6
C 12 4 9310 27.76 1264 1270 289.6
D 1 52 9759962 38068.31 1081 1054 256.4
D 10 157 259441 1007.94 1081 1054 256.4
D 2 14 35201 133.2 1081 1054 256.4

Detector plane histogram (DPH)

Histogram calculated using DETX and DETY for each event in the final _common_clean file

Quadrant A Quadrant B
Quadrant D Quadrant C

Count rate plots and images

Plot type Count rate plots Images
Comparison with Poisson distribution
Blue bars denote a histogram of data divided into 1 sec bins.
Red curve is a Poisson curve with rate = median count rate of data.
Quadrant-wise count rates
Data is divided into 100 sec bins
Module-wise count rates for Quadrant A
Data is divided into 100 sec bins
Module-wise count rates for Quadrant B
Data is divided into 100 sec bins
Module-wise count rates for Quadrant C
Data is divided into 100 sec bins
Module-wise count rates for Quadrant D
Data is divided into 100 sec bins

Housekeeping plots

Parameter Plot
CZT HV Monitor
D_VDD
Temperature 1
Veto HV Monitor
Veto LLD
Alpha Counter
_CPM_Rate
CZT Counter
+2.5 Volts monitor
+5 Volts monitor
_ROLL_ROT
_Roll_DEC
_Roll_RA
Veto Counter